factual concern, but the scientists say, well, i don't understand that as as a factual matter and i can't define or measure it, then the law is just sort of set free to use normative value-based considerations in making decisions about civil commitment. >> professor. >> i'm going to add, do this a little bit shorter, i think, which is let's start with a question to everybody in the audience. all right, so if you like chocolate cake, raise your left hand. if you do not like chocolate cake, raise your right hand. all people who like chocolate cake left hand, don't like chocolate cake right hand. all right, hands down. how many people found it difficult to raise your hand by yourself? not very many. great, you made a choice. you thought about it. you decided and you acted. and my concept of what free will is the ability to act consistent with your preferences and desires.